Hacker News Reader

Is the WAL log situation you describe here a likely function of both distance (hence latency) and volume of writes? So if I have a high volume of writes AND I'm trying to replicate them half way around the globe I'm more at risk of running out of WAL log space on the leader?

View on HN

Yeah, if you are doing global replication you are much more likely to fall behind so you should have aggressive monitoring on the replica to remove it if replica lag gets to high, that will prevent the primary from retaining WAL files for too long.

It also means you will need to be able to resync the replica from a backup once write volume calms down.

Reply on news.ycombinator.com